Eremko A, Brizhik L, Loktev V. To the Theory of the Lamb Shift in the Relativistic Hydrogen Atom. Ukr. J. Phys. [Internet]. 2024 Sep. 18 [cited 2024 Sep. 27];69(8):537. Available from: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2023402